Telescoping support bars for portable display systems

ABSTRACT

A portable display frame includes a support frame and improved telescoping support bars. Each of the improved telescoping support bars includes a pass-through engaging slot on a first telescoping support bar section and an easily replaceable attachment projection member on a last telescoping support bar section. Known support bars require flexing the support bar to pass a closed end engaging slot on the first telescoping support bar section past a middle engaging hub, often resulting in damage to the telescoping support bar. The pass-through engaging slot of the present invention passes over the middle engaging hub without requiring flexing. Further, attachment projections on known support bars have broken and required time consuming repair or replacement of the support bar, often at an inconvenient time and location. The replaceable attachment projection member allows simple and easy repair when the attachment projections break.

BACKGROUND OF THE INVENTION

The present invention relates to elements of portable displays and in particular to an improved telescoping support bar which reduces the likelihood of damage during assembly.

Portable display frames are used commonly for displays used in business presentations and trade shows. Generally, display panels are attached to the portable display frames. The portable display frames are made to be light weight, to allow fast assembly, and to be easily transportable, for example, by car or aircraft. Because the portable display frames are often assembled on-site by a salesman or presenter, the assembly should be simple and require little to no instruction. Because a presenter or salesman may not have assistance in the transport and/or assembly of the portable display frames, and may only have a brief time to assemble the portable display frames, ease of assembly is an important feature. The presentation may also be adversely affected if the display appears flimsy or is not squared with the floor and/or walls. As a result, it is important that the portable display frames are sturdy and may be properly assembled with little instruction or assistance.

A portable display frame is described in U.S. Pat. No. 5,501,051 for “PORTABLE DISPLAY FRAME WITH TELESCOPING SUPPORT BARS.” The portable display frame of the '051 patent provides a portable display frame which is easy and quick to assemble, sturdy and portable. The portable display of the '051 patent includes a support frame, vertical support bars attached to the support frame, and display panels attached to the vertical support bars. The vertical support bars each comprise a plurality of individual bars which telescope into one another for ease of storage and transport. As the bars are telescopically expanded, unique connection pieces cause each of the inner bars to snap forward to provide a smooth support surface for the display panels disposed in a single plane. The '051 patent is herein incorporated by reference.

Unfortunately, use of the portable display frame of the '051 patent has demonstrated two weaknesses. A pair of attachment projections 98 at the top of the vertical support bars have broken. Because the attachment projections are an integral part of the third (or top) bar 50 of the vertical support bars, the entire third bar must be replaced, and is often unavailable when needed. Additionally, the engagement of the first (or bottom) bar 12 to the support frame requires that the first bar be pulled away from the support frame after the second and third bars have been engaged. Such pulling away has resulted in breaking or bending some vertical support bars which are constructed to have minimum weight. Either damage described above may present a major problem at a trade show or any presentation where a professional presentation is of vital importance, and replacement parts may not be available locally.

BRIEF SUMMARY OF THE INVENTION

The present invention addresses the above and other needs by providing a portable display frame which includes a support frame and improved telescoping support bars. Each of the improved telescoping support bars includes a pass-through engaging slot on a first telescoping support bar section and an easily replaceable attachment projection member on a last telescoping support bar section. Known support bars require flexing the support bar to pass a closed end engaging slot on the first telescoping support bar section past a middle engaging hub, often resulting in damage to the telescoping support bar. The pass-through engaging slot of the present invention passes over the middle engaging hub without requiring flexing. Further, attachment projections on known support bars have broken and required time consuming repair or replacement of the support bar, often at an inconvenient time and location. The replaceable attachment projection member allows simple and easy repair when the attachment projections break.

In accordance with one aspect of the invention, there is provided a portable display frame having an improved telescoping vertical support bar. The display frame comprises a support frame and telescoping vertical support bars. The support frame includes horizontally spaced apart sets of vertically spaced apart engaging hubs on a support frame front. The telescoping vertical support bars include a bottom telescoping support bar section and a top telescoping support bar section, the support bar sections having a rear face and a front face. Vertically spaced apart engaging slots reside on the rear face of the support bar members, the engaging slots are shaped to receive the engaging hubs to attach the support bars to the support frame. The engaging slots comprise a pass-through engaging slot residing on each bottom telescoping support bar member and a closed end engaging slot residing on each top telescoping support bar member. A removable and replaceable attachment projection member includes attachment projections and resides on the front face of the support bars for attaching panel boards to the front faces of the support bars.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

The above and other aspects, features and advantages of the present invention will be more apparent from the following more particular description thereof, presented in conjunction with the following drawings wherein:

FIG. 1 is a portable display system including improved telescoping vertical support bars according to the present invention attached to a support frame.

FIG. 2 is a perspective view of the improved telescoping vertical support bar.

FIG. 3A is a front view of the improved telescoping vertical support bar.

FIG. 3B is a side view of the improved telescoping vertical support bar.

FIG. 4A is a front view of a bottom telescoping support bar section of the improved telescoping vertical support bar.

FIG. 4B is a side view of the bottom telescoping support bar section of the improved telescoping vertical support bar.

FIG. 4C is a bottom view of the bottom telescoping support bar section of the improved telescoping vertical support bar.

FIG. 5A is a front perspective view of the bottom telescoping support bar section of the improved telescoping vertical support bar.

FIG. 5B is a rear perspective view of the bottom telescoping support bar section of the improved telescoping vertical support bar.

FIG. 6A is a front view of a middle telescoping support bar section of the improved telescoping vertical support bar.

FIG. 6B is a side view of the middle telescoping support bar section of the improved telescoping vertical support bar.

FIG. 6C is a rear view of the middle telescoping support bar section of the improved telescoping vertical support bar.

FIG. 6D is a bottom view of the middle telescoping support bar section of the improved telescoping vertical support bar.

FIG. 7A is a front perspective view of the middle telescoping support bar section of the improved telescoping vertical support bar.

FIG. 7B is a rear perspective view of the middle telescoping support bar section of the improved telescoping vertical support bar.

FIG. 8A is a front view of a top telescoping support bar section of the improved telescoping vertical support bar.

FIG. 8B is a side view of the top telescoping support bar section of the improved telescoping vertical support bar.

FIG. 8C is a rear view of the top telescoping support bar section of the improved telescoping vertical support bar.

FIG. 8D is a bottom view of the top telescoping support bar section of the improved telescoping vertical support bar.

FIG. 9A is a front perspective view of the top telescoping support bar section of the improved telescoping vertical support bar.

FIG. 9B is a rear perspective view of the top telescoping support bar section of the improved telescoping vertical support bar.

FIG. 10A is a front perspective view of a first engaging hub for attaching the support bar to the support frame.

FIG. 10B is a front perspective view of a second engaging hub for attaching the support bar to the support frame.

FIG. 11A is a front view of a lower middle engaging slot member of the improved telescoping vertical support bar.

FIG. 11B is a side view of the lower middle engaging slot member of the improved telescoping vertical support bar.

FIG. 11C is a bottom view of the lower middle engaging slot member of the improved telescoping vertical support bar.

FIG. 12A is a front perspective view of the lower middle engaging slot member of the improved telescoping vertical support bar.

FIG. 12B is a rear perspective view of the lower middle engaging slot member of the improved telescoping vertical support bar.

FIG. 13A is a front view of an upper middle engaging slot member of the improved telescoping vertical support bar.

FIG. 13B is a side view of the upper middle engaging slot member of the improved telescoping vertical support bar.

FIG. 13C is a bottom view of the upper middle engaging slot member of the improved telescoping vertical support bar.

FIG. 14A is a front perspective view of the upper middle engaging slot member of the improved telescoping vertical support bar.

FIG. 14B is a rear perspective view of the upper middle engaging slot member of the improved telescoping vertical support bar.

FIG. 15A is a front view of an upper engaging slot member of the improved telescoping vertical support bar.

FIG. 15B is a side view of the upper engaging slot member of the improved telescoping vertical support bar.

FIG. 15C is a bottom view of the upper engaging slot member of the improved telescoping vertical support bar.

FIG. 16A is a front perspective view of the upper engaging slot member of the improved telescoping vertical support bar.

FIG. 16B is a rear perspective view of the upper engaging slot member of the improved telescoping vertical support bar.

FIG. 17A is a front view of an attachment projection member of the improved telescoping vertical support bar.

FIG. 17B is a side view of the attachment projection member of the improved telescoping vertical support bar.

FIG. 17C is a bottom view of the attachment projection member of the improved telescoping vertical support bar.

FIG. 18A is a front perspective view of the attachment projection member of the improved telescoping vertical support bar.

FIG. 18B is a rear perspective view of the attachment projection member of the improved telescoping vertical support bar.

Corresponding reference characters indicate corresponding components throughout the several views of the drawings.

DETAILED DESCRIPTION OF THE INVENTION

The following description is of the best mode presently contemplated for carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of describing one or more preferred embodiments of the invention. The scope of the invention should be determined with reference to the claims.

A portable display system 20 including display panels 30 mounted to improved telescoping vertical support bars 10 according to the present invention is shown attached to a support frame 100 in FIG. 1. One telescoping vertical support bar 10 is shown in solid lines with the display panels 30 cut away, and the remaining telescoping vertical support bars 10 are shown as dashed lines. The support frame 100 is generally a foldable or assembleable frame, for example, with vertical “X” members 102 and horizontal “X” members 110. Engaging hubs 120 a-120 d reside on a support frame front 100 a and cooperate with the support bars 10 to attach the support bars 10 to the display frame 100. The support bars 10 preferably are telescoping and more preferably comprise three telescoping support bar sections 12, 14, and 16. The improved support bars 10 according to the present invention provide easier repair and reduce the likelihood of damage. Such improved support bars 10 may be used with any support frame having suitable engaging hubs.

While telescoping vertical support bars are shown in FIG. 1, telescoping support bars according to the present invention may also be attached horizontally to a suitable support frame and such horizontal arrangement is intended to come within the scope of the present invention. Such horizontal support bars may include a top horizontal support bar with horizontally spaced apart attachment projections (see FIG. 18 a) residing along the length of the top horizontal support bar. Further, while a telescoping support bar is described herein, a support assembled from segments may also be made having the features of the present invention, and such assembled support bar is intended to come within the scope of the present invention.

A perspective view of the improved telescoping vertical support bar 10 is shown in FIG. 2, a front view of the improved telescoping vertical support bar 10 is shown in FIG. 3A, and a side view of the improved telescoping vertical support bar 10 is shown in FIG. 3B. The improved telescoping vertical support bar 10 comprises three telescoping support bar sections, a bottom (or first) telescoping support bar section 12, a middle telescoping support bar section 14, and a top (or last) telescoping support bar section 16. A telescoping support bar is either preferred or required in many instances to allow shipment of the display frame. Generally, a three section support bar is preferred, but a support bar with more or less sections also benefits from the present invention. The display panels 30 mount against a front face 10 a of the support bar 10.

An attachment projection member 60 (see FIGS. 17A-18B), including attachment projections 62 for attaching the panel boards 30 to the front faces 10 a of the support bars 10, reside on a top front surface of the support bars 10. An upper engaging slot member 50 (see FIGS. 15A-16B), for engaging the support frame 100, reside on a top front surface of the support bars 10. An upper middle engaging slot member 40 (see FIGS. 13A-14B), for engaging the support frame 100, reside on a front surface of the support bars 10 below the upper engaging slot member 50. The engaging slot members 50 and 40, along with an engaging slot member 30 not visible in FIG. 3B, include engaging slots spaced away from the telescoping support bar sections to be aligned in a vertical plane for engagement with the support frame 100.

A front view of the bottom telescoping support bar section 12 of the improved telescoping vertical support bar 10 is shown in FIG. 4A, a side view of the bottom telescoping support bar section 12 is shown in FIG. 4B, a bottom view of the bottom telescoping support bar section is shown in FIG. 4C, a front perspective view of the bottom telescoping support bar section 12 is shown in FIG. 5A, and a rear perspective view of the bottom telescoping support bar section is shown in FIG. 5B. The bottom telescoping support bar section 12 includes a bottom engaging slot 18 a for cooperation with a bottom engaging hub 120 a (see FIG. 1), and a first support bar mouth 20 a for receiving the middle telescoping support bar 14. The bottom engaging slot 18 a is an open ended pass through engaging slot and cooperation of the bottom engaging slot 18 a with the bottom engaging hub 120 a provides horizontal (or more generally, lateral) support for the support bar 10.

Known support bars, for example as described in U.S. Pat. No. 5,501,051 for “PORTABLE DISPLAY FRAME WITH TELESCOPING SUPPORT BARS” (incorporated by reference above), include several (typically four for a three section support bar) engaging slots. When the support bar 10 is extended for use, the engaging slots are generally in the same vertical plane to allow the support bar 10 to reside against the support frame front 100 a (see FIG. 1). Unfortunately, the resulting assembly method requires pulling the bottom of the extended support bar away from the support frame front 100 a to pass the lower engaging slot 18 past a lower middle engaging hub 120 b, and as a result, the support bar 10 may be difficult to engage or even damaged.

The engaging slot 18 a includes a tapered mouth portion to align the engaging slot 18 a with the lug 120 a and a narrow straight portion to engage the engaging slot 18 a with the lug 120 a. Further, the improved support bar 10 of the present invention includes a bottom engaging slot 18 a which is a pass-through engaging slot (i.e., the narrow straight portion is open ended as seen in FIG. 4C). Such pass-through engaging slot allows the support bar 10 to be assembled to the support frame 100 by first attaching the top and middle sections of the support bar 10 to the support frame 100 by sliding the lower engaging slot 18 past the lower middle engaging hub 120 b (i.e., the hub passes through the entire length of the slot 18 a and out the end) without pulling the bottom of the support bar 10 away from the support frame front 100 a.

A front view of the middle telescoping support bar section 14 of the improved telescoping vertical support bar 10 is shown in FIG. 6A, a side view of the middle telescoping support bar section 14 is shown in FIG. 6B, a rear view of the middle telescoping section 14 is shown in FIG. 6C, a bottom view of the middle telescoping section 14 is shown in FIG. 6D, a front perspective view of the middle telescoping support bar section 14 is shown in FIG. 7A, and a rear perspective view of the middle telescoping support bar section 14 is shown in FIG. 7. The middle telescoping support bar section 14 includes an engaging slot member seat 23 a for receiving a bottom engaging slot member 30 (see FIGS. 11A-11C,12A, and 12B). The bottom engaging slot member 30 includes a mouth 32 for engaging a first split post 24 a residing in the engaging slot member seat 23 a. The engaging slot member 30 is preferably biased away from the engaging slot member seat 23 a (see FIG. 6C) by a spring 35 positioned over the post 24 a and as shown by arrow 35′, or by a plastic finger molded into the engaging slot member 30, or the engaging slot member seat 23 a, or the like.

The engaging slot member 40 is preferably similarly biased away from the seat 23 b. The bottom engaging slot member 30 further includes hands 33 for engaging slots 25 a along sides of the engaging slot member seat 23 a to help position the bottom engaging slot member 30 in the engaging slot member seat 23 a. The middle telescoping support bar section 14 includes a second support bar mouth 20 b for receiving the top telescoping support bar 16 and is preferably made from a stiff material providing low friction, for example, glass filled polypropylene or Acrylonitrile Butadiene Styrene (ABS).

A front view of the top telescoping support bar section 16 of the improved telescoping vertical support bar 10 is shown in FIG. 8A, a side view of the top telescoping support bar section 16 is shown in FIG. 8B (shown with top engaging slot member 50 and attachment projection member 60 in place proximal to a top end of the top telescoping support bar section 16), a rear view of the top telescoping support bar section 16 is shown in FIG. 8C, a bottom view of the top telescoping support bar section 16 is shown in FIG. 8D, a front perspective view of the top telescoping support bar section 16 is shown in FIG. 9A, and a rear perspective view of the top telescoping support bar section 16 is shown in FIG. 9B. The top telescoping support bar section 16 includes a second engaging slot member seat 23 b for receiving a middle engaging slot member 40 (see FIGS. 13A-13C, 14A, and 14B). The middle engaging slot member 40 includes a mouth 42 for engaging a second split post 24 b residing in the engaging slot member seat 23 b. The middle engaging slot member 40 further includes hands 52 for engaging second slots 25 b along sides of the engaging slot member seat 23 b to help position the middle engaging slot member 40 in the engaging slot member seat 23 b.

The top telescoping support bar section 16 further includes a third engaging slot member seat 23 c for a top engaging slot member 50 (see FIGS. 15A-15C, 16A, and 16B), and an attachment projection member seat 26 for an attachment projection member 60 (see FIGS. 17A-17C, 18A, and 18B). The top end of the top telescoping support bar section 16 is preferably sandwiched between the top engaging slot member 50 and the attachment projection member 60. The top engaging slot member 50 includes an opposing pair of hands 56 along the sides of the top engaging slot member 50 and a third hand 54 at a nose of the top engaging slot member 50 with ledges for engaging interior edges in the top telescoping support bar section 16 to retain the top engaging slot member 50 on the top telescoping support bar section 16. The attachment projection member 60 includes male screw passages 64 which align with and engage female screw passages 52 in the top engaging slot member 50 for attaching the removable and replaceable attachment projection member 60 to the top telescoping support bar section 16. The cooperating screw passages 52 and 64 pass through the top end of the top telescoping support bar section 16 to meet. The support bar section 16 is preferably made from a stiff material providing low friction, for example, glass filled polypropylene or ABS.

A front perspective view of a preferred engaging hub 120 representing engaging hubs 120 a, 120 b, and 120 c (see FIG. 1) for attaching the support bar 10 to the support frame 100 is shown in FIG. 10. The engaging hub 120 allows the support bar 10 to be carried by the support frame 100 and includes a flared portion 121 for retaining the engaging slot on the engaging hub 120 and a multiplicity of mouths 122 for connecting the horizontal and vertical members 110 and 102 (see FIG. 1) to the hub 120. The support bar 10 may thus be positioned with the engaging slots just above the engaging hubs, and slid downwards onto the engaging hubs.

The engaging hub 120 requires a modification to the engaging slots to provide an upward assembly of the support bars to the support frame.

A front view of a lower engaging slot member 30 of the improved telescoping vertical support bar 10 is shown in FIG. 11A, a side view of the lower engaging slot member 30 is shown in FIG. 11B, a bottom view of the lower engaging slot member 30 is shown in FIG. 11C, a front perspective view of the lower engaging slot member 30 is shown in FIG. 12A, and a rear perspective view of the lower engaging slot member 30 is shown in FIG. 12B. The engaging slot member 30 attaches to the engaging slot member seat 23 a of the middle telescoping support bar section 14 (see FIG. 6C). The opposing hands 33 engage the slots 25, the mouth 32 engages the split post 24 a, and the hand 34 having a ledge engages an edge in the middle telescoping support bar section 14 to position and retain the engaging slot member 30 in the support bar section 14. The engaging slot member 30 includes the lower middle engaging slot 18 b for engaging the lower middle engaging lug 120 b to retain the support bar 10 on the support frame 100 and to provide both vertical and horizontal support to the support bar 10. The engaging slot 18 b includes a tapered mouth portion to align the engaging slot 18 b with the lug 120 b and a narrow straight portion to engage the engaging slot 18 b with the lug 120 b.

A front view of a middle engaging slot member 40 of the improved telescoping vertical support bar 10 is shown in FIG. 13A, a side view of the middle engaging slot member 40 is shown in FIG. 13B, a bottom view of the middle engaging slot member 40 is shown in FIG. 13C, a front perspective view of the middle engaging slot member 40 is shown in FIG. 14A, and a rear perspective view of the middle engaging slot member 40 is shown in FIG. 14B. The engaging slot member 40 attaches to the engaging slot member seat 23 b of the top telescoping support bar section 16 (see FIG. 8B). The opposing hands 46 engage the slots 25 b in the support bar section 16, the mouth 42 engages the second split post 24 b, and the hand 44 having a ledge engages an edge in the support bar section 16 to position and retain the engaging slot member 40 in the support bar section 16. The engaging slot member 40 includes the upper middle engaging slot 18 c for engaging the upper middle engaging lug 120 c to retain the support bar 10 on the support frame 100 and to provide both vertical and horizontal support to the support bar 10. The engaging slot 18 c includes a tapered mouth portion to align the engaging slot 18 c with the lug 120 c and a narrow straight portion to engage the engaging slot 18 c with the lug 120 c.

A front view of an upper engaging slot member 50 of the improved telescoping vertical support bar 10 is shown in FIG. 15A, a side view of the upper engaging slot member 50 is shown in FIG. 15B, a bottom view of the upper engaging slot member 50 is shown in FIG. 15C, a front perspective view of the upper engaging slot member 50 is shown in FIG. 16A, and a rear perspective view of the upper engaging slot member 50 is shown in FIG. 16B. The engaging slot member 50 attaches to the engaging slot member seat 23 c of the top telescoping support bar section 16 (see FIGS. 8B and 9B). The opposing hands 56 are inserted into the engaging slot member seat 23 c and include ledges which engage edges in the engaging slot member seat 23 c to retain the engaging slot member 50 in the engaging slot member seat 23 c. The engaging slot member 50 includes a closed end upper engaging slot 18 d for engaging the upper engaging lug 120 d to retain the support bar 10 on the support frame 100 and to provide both vertical and horizontal support to the support bar 10. The engaging slot 18 d includes a tapered mouth portion to align the engaging slot 18 d with the lug 120 d and a narrow straight portion to engage the engaging slot 18 d with the lug 120 d.

A front view of an attachment projection member 60 of the improved telescoping vertical support bar 10 is shown in FIG. 17A, a side view of the attachment projection member 60 is shown in FIG. 17B, a bottom view of the attachment projection member 60 is shown in FIG. 17C, a front perspective view of the attachment projection member 60 is shown in FIG. 18A, and a rear perspective view of the attachment projection member 60 is shown in FIG. 18B. The attachment projection member 60 includes attachment projections 62 residing on the front face of the attachment projection member 60 for attaching the panel boards 30 (see FIG. 1) to the front faces 10 a of the support bars 10 (see FIG. 2) and male screw passages 64 which align with and engage female screw passages 52 in the top engaging slot member 50 for attaching the attachment projection member 60 to the top telescoping support bar section 16. The attachment projection member 60 is thus removable and replaceable in the event of damage to the attachment projections 62, and is preferably removable and replaceable using screws residing in the screw passages 52 and 64.

While the invention herein disclosed has been described by means of specific embodiments and applications thereof, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope of the invention set forth in the claims. 

1. A portable display frame comprising: a support frame having a two dimensional array of spaced apart engaging hubs on a support frame front; support bars having a front face and a rear face, each support bar including: a first support bar section having a first front face and a first rear face; and a last support bar section having a last front face and a last rear face, the last support bar section cooperating with the first support bar sections to form the support bar; longitudinally spaced apart engaging slots on the first and last rear face of each corresponding first and last support bar section, the engaging slots shaped to receive the engaging hubs to attach the support bars to the support frame, the engaging slots including: an open end pass-through engaging slot residing on each first support bar section; and a closed end engaging slot residing on each last support bar section; and attachment projections residing on the front face of the support bars for attaching panel boards to the display frame.
 2. The portable display frame of claim 1, wherein one of the pass-through engaging slots resides on each first support bar section proximal to an end opposite the last support bar section.
 3. The portable display frame of claim 2, wherein one of the pass-through engaging slots is molded into each first support bar section.
 4. The portable display frame of claim 2, wherein the pass-through engaging slot includes a longitudinally narrowing tapered portion to guide the pass-through engaging slots into the engaging hubs and a narrow straight portion for engaging the engaging hubs to position each support bar laterally on the support frame.
 5. The portable display frame of claim 2, wherein two of the closed end engaging slots reside proximal to opposite ends on each last support bar section.
 6. The portable display frame of claim 1, wherein the support bars include a removable and replaceable attachment projection member and the attachment projections reside on the attachment projection member.
 7. The portable display frame of claim 6, wherein the support bars are vertical support bars and the attachment projection member resides on the last support bar section proximal to a top end of the last support bar section.
 8. The portable display frame of claim 1, wherein: the support bars are telescoping support bars; the first support bar section is a first telescoping support bar section; and the last support bar section is a last telescoping support bar section.
 9. The portable display frame of claim 8, wherein: the telescoping support bars are vertical telescoping support bars; the first telescoping support bar sections are bottom vertical telescoping support bar sections; and the last telescoping support bar sections are top telescoping support bar sections.
 10. The portable display frame of claim 9, wherein each top telescoping support bar section includes a removable and replaceable attachment projection member proximal to the top of each top telescoping support bar section and the attachment projections reside on each attachment projection member.
 11. The portable display frame of claim 9, further including middle telescoping support bar sections telescopingly residing between the bottom telescoping support bar sections and the top telescoping support bar sections.
 12. The portable display frame of claim 11, wherein: one of the pass through engaging slots resides proximal to the bottom of each bottom telescoping support bar section; one of the closed end engaging slots resides proximal to the bottom of each middle telescoping support bar section; one of the closed end engaging slots resides proximal to the bottom of each top telescoping support bar section; and one of the closed end engaging slots resides proximal to the top of each top telescoping support bar section.
 13. A portable display frame comprising: a support frame having horizontally spaced apart sets of vertically spaced apart engaging hubs on a support frame front; telescoping vertical support bars having a rear face and a front face; bottom telescoping vertical support bar sections of the telescoping vertical support bars; top telescoping vertical support bar sections of the telescoping vertical support bars telescopingly cooperating with the bottom telescoping vertical support bar sections; vertically spaced apart engaging slots on the rear face of the telescoping vertical support bars, the engaging slots shaped to receive the engaging hubs to attach the support bars to the support frame, the engaging slots including: open ended bottom engaging slots residing proximal to the bottoms of the bottom telescoping vertical support bar sections of the telescoping vertical support bars, the bottom engaging slots comprising pass-through engaging slots allowing the hubs to pass vertically through the bottom engaging slots and horizontally capturing the hubs residing in the bottom engaging slots; and two closed end engaging slots residing on opposite ends of the top telescoping vertical support bar sections, the closed ends horizontally and vertically capturing the hubs which enter the closed end engaging slots; and a removable and replaceable attachment projection member residing on the front face of the support bars for attaching panel boards to the front faces of the support bars.
 14. The portable display frame of claim 13, wherein attachment projections are attached to the attachment projection member for attaching the panel boards.
 15. A portable display frame comprising: a support frame having horizontally spaced apart sets of vertically spaced apart engaging hubs on a support frame front; telescoping vertical support bars, each telescoping vertical support bar including: a bottom telescoping support bar section; a middle telescoping support section; and a top telescoping support bar section, each support bar section having a rear face and a front face; vertically spaced apart engaging slots on the rear faces of the support bar sections, the engaging slots shaped to receive the engaging hubs to attach the support bars to the support frame, the engaging slots comprising: an open end pass-through engaging slot residing proximal to the bottom on each bottom telescoping support bar section; and a closed end engaging slot residing proximal to the bottom on each middle telescoping support bar section; a closed end engaging slots residing proximal to the bottom of each top telescoping support bar section; a closed end engaging slots residing proximal to the top of each top telescoping support bar section; and a removable and replaceable attachment projection section including attachment projections and residing on the front face of each top telescoping support bar section, the attachment projections for attaching panel boards to the display frame. 